Only the Astros (seven) and Pirates (six) have more players in the top 100.
The Phillies had seven players in the preseason top 100, but right-hander Mark Appel, outfielder Cornelius Randolph and outfielder Roman Quinn dropped out because of injuries. Moniak, whom the Phillies selected with the first overall pick in the 2016 Draft, joined.
The ranking of baseball's top prospects is completed by MLBPipeline.com Draft and prospect experts Jonathan Mayo, Jim Callis and Mike Rosenbaum, who compile input from industry sources, including scouts and scouting directors. It is based on analysis of players' skill sets, upsides, proximity to the Majors and potential immediate impact to their teams. Only players with rookie status are eligible for the list. The rankings follow the Collective Bargaining Agreement guidelines for which players fall under the international pool money rules: Players who were at least 23 years old when they signed and played in leagues deemed to be professional (Japan, Korea, Taiwan, Cuba) are not eligible.
Interestingly, 16 prospects in the Phillies' top 30 joined the organization since the Phillies officially began their rebuilding process following the 2014 season.
Nine of the 16 joined via trade: Williams (ranked third in the organization), Alfaro (fourth), Thompson (fifth), Appel (11th), right-hander Nick Pivetta (18th), right-hander Thomas Eshelman (19th), right-hander Ben Lively (24th), right-hander Jimmy Cordero (26th) and right-hander Alberto Tirado (30th).
Six came in the last two Drafts: Moniak (second), Randolph (sixth), right-hander Kevin Gowdy (10th), second baseman Scott Kingery (14th), third baseman Cole Stobbe (15th) and left-hander JoJo Romero (25th).
One joined as an amateur free agent: outfielder Jhailyn Ortiz (21st).
Todd Zolecki has covered the Phillies since 2003, and for MLB.com since 2009. Read his Phillies blog The Zo Zone, follow him on Twitter and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.